A DEVICE AND A METHOD FOR TYING AND UNTYING A TUG LINE AT A SHIP

Abstract: A device and a method for engaging and disengaging of a towing line from a tow boat to and from a ship is disclosed. At the ship there is a hawse-hole (5), a bollard head (1) and a working for inhauling of a messenger rope (4), attached to the loop of the towing line (3). The device is especially characterized in that a guide means, like a hook (2) is attached to the ship in such a way, between the bollard head (12) and the working (7), so that the messenger rope (4) guided by the second guide means (2) can pull the loop of the towing line (3) near and above the bollard head (1) so that this easily can be engaged around the bollard head (1), whilst the messenger rope (4), free from the second guide means (2), by the working (7) can lift the loop inwardly, up above the bollard head (1) so that the towing line can be taken on board by the tow boat.

Description: A DEVICE AND A METHOD FOR TYING AND UNTYING A TUG LINE AT A SHIP Tne present invention relates to a device and a method for engaging and disengaging of a towing line, in one end formed like a loop, to and from a ship, at which there are provided, substantially in one common vertical plane, a first guide means in the form of a hawse-hole, a bollard head, around which said loop is intended to be engaged, a working for inhauling of a messenger rope, attached to the towing line. Background The work on board a ship, engaging and disengaging a towing line from a tow boat to a ship means, with the equipment hitherto available, and considering the limited crew nowadays on board, considerable risks for accidents. Engaging and disengaging have furthermore hitherto been arduous. The object and characteristics of the invention The object of the invention is to provide a device and a method of the art mentioned introductorily, that admits safe and simple engaging and disengaging of a towing line from a tow boat to and from a ship. A device according to the invention is primarily characterized by a second guide means, attached to the ship between the bollard head and the working, a first line between the hawse -hole and the second guide means running relatively close above the bollard head, whilst a second line between the hawse - hole and the working, runs relatively high above the bollard head, so that the messenger rope, guided by the second guide means substantially following the first line admits engaging of the loop of the towing line around the bollard head, whilst the messenger rope, free from the second guide means, substantially following the second line, admits disengaging of the loop of the towing line from the bollard head. This device and correponding method warrant engaging and disengaging without risk and with a limited manpower effort. In one preferred embodiment of the device according to the invention a third guide means is attached to the ship between the bollard head and the hawse- hole, provided to guide, when engaging, the loop of the towing line in a horizontal plane to warrant the engaging of the loop around the bollard head. With this embodiment the engaging and disengaging will be even more safe and even less demanding for manpower effort. Per se the second guide means can be formed in different ways, but it has proved to be suitable to form it like a hook with the opening downwards.The third guide means is advantageously formed like a horizontal bar, in one end carried by a leg, and it is suitably located in the vicinity of the bollard head. Description of the invention The invention shall now be described more closely, reference being made to the enclosed figures, which show two embodiments of a device according to the invention. In the enclosed figures, which are all schematical, figures 1 a - b show side views of parts of a first embodiment of the invention, figure c shows a view from above of parts of the embodiment in figures 1 a,b, figures 2 a- c show engaging of a towing line at an embodiment in figures 1 a- c, figures 3 a-c show disengaging of a towing line at the embodiment in figures 1 a- c, figures 4 a- c show engaging of a towing line at a second embodiment of the invention, figures 5 a- c show disengaging of a towing line at the embodiment in figures 4 a- c, figure 6 shows a view from above of parts of a second embodiment of the inven¬ tion. In the figures 1 refers to bollard head with a sliding shield 6. A hawse- hole provided in a plate at the side of the ship is referred to as 5, and a hook, attached to the deck of the ship is 2. The hawse- hole 5, the bollard head 1 and the hook 2 are located in such a way, that a common vertical plane can be laid through them. A working 7 is only indicated in the figures 2 and 3. The procedure when engaging the towing line is seen in figures 2 a- c. In figure 2 a there is shown how the messenger rope is pulled from the working 7, below the hook 2, above the bollard head 1 and out through the hawse- hole to a tow boat, which is not shown. Figure 2 b shows how the towing line 3 with its loop has been pulled above and past the bollard head 1, and figure 2 c shows how the towing line 3 has been laid around the bollard head 1 by making the the messenger rope 4 yield from the working when the towing line 3 has been taken on board from the the tow boat. Disengaging is shown in figures 3 a- c.Figure 3 a shows the messenger rope 4, free from the hook 2, ready to be pulled in by the working 7, so that the loop of the towing line 3 can be lifted inwardly and up above the bollard 1, according to figure 3 b, whereafter the towing line 3 is taken on board by the tow boat whilst the working yields the messenger rope 4. In figures 4 a- c there is shown engaging of a towing line at a second embodiment of a device according to the invention. The working is not shown in these figures or figures 5 a - c. When compared with the first embodiment, described above, here has been added a third guide means 8, in the form of a horizontal bar 10, in one end carried by a vertical leg 11, attached to the deck of the ship. As is seen more distinctly in figure 6 the loop of the towing line is guided from a starting position 9a horizontally in a plane by the bar 10, so that it will lie safely around the bollard head in the final position 9 b. Disengaging the towing line is seen in figures 5 a- c.

Claims: Patent claims A device for engaging and disengaging of a towing line (3), in one end formed like a loop, to and from a ship, at which there are provided, substantially in one common vertical plane, a first guide means in the form of a hawse-hole (5), a bollard head (1), around which said loop is intended to be engaged, a working (7) for inhauling of a messenger rope (4), attached to the towing line (3). characterized by a second guide means (2), attached to the ship between the bollard head (1) and the working (7), a first line between the hawse -hole (5) and the second guide means (2) running relatively close above the bollard head (1), whilst a second line between the hawse - hole (5) and the working (7), runs relatively high above the bollard head (1), so that the messenger rope (4) guided by the second guide means (2) substantially following the first line admits engaging of the loop of the towing line (3) around the bollard head (1), whilst the messenger rope (4), free from the second guide means, substantially following the second line, admits disengaging of the loop of the towing line (3) from the bollard head (1). 2. A device according to claim 1 , characterized by a third guide means (8) attached to the ship between the bollard head (1) and the hawse- hole, provided, when engaging the towing line (3), to guide the loop (9a, 9b) of the towing line (3) horizontally in a plane to warrant engaging of the loop around the bollard head (1). 3. A device according to claim 1 or 2, characterized in that the second guide means (2) is formed like a hook with the opening downwards. 4. A device according to claim 2 or 3, characterized in that the third guide means (8) is formed like a horizontal bar (10), in one end carried by a leg (11). 5. A device according to any of claims 2 to 4, characterized in that the third guide means (8) is provided in the vicinity of the bollard head (1). ' 6. A method for engaging and disengaging of a towing line (1) in one end formed like a loop, to and from a ship, at which are provided, substantially in a common vertical plane, a first guide means in the form of a hawse- hole, a bollard head (1), a working (7) for inhauling of a messenger rope (4), characterized in that for engaging, the messenger rope (4) is attached to the towing line (3), and is pulled by the working (7), guided by a second guide means (2) above the upper part of the bollard head (1), whereupon the working yields, so that the loop can be engaged around the bollard head (1), and for disengaging the messenger rope (4) free from the second guide means (2) is pulled from the working (7) so that the loop of the towing line (3) is lifted relatively high up above the upper part of the bollard head (1), so that the towing line (3) can be pulled from the ship. 7. A method according to claim 6, characterized in that when engaging, the loop (9a,9b) of the towing line (3) is guided horizontally in a plane by a third guide means (8) to warrant engaging of the loop (9a, 9b) around the bollard head (1).

Inventors: BENNMO INGVAR, BENNMO, INGVAR
Applicants: BENNMO INGVAR, BENNMO, INGVAR
Application year: 1994
Main classification: B63B21
IPC codes: B63B21